The nervous mechanism of the infant is a very delicate organization and often the fond parents do the child an injustice by not giving due consideration to the environment surrounding him the first year of life. The greatest development of the brain takes place during the first two years. To have the proper development of the nervous system there must be a quiet environment and the elimination of anything that will excite the child or tend to create nervousness. If the child is unduly susceptible to noise and is irritable and nervous, cries out or is too easily startled, there is a cause for this and a very careful analysis should be given and the causative subluxations found and adjusted immediately. The nervousness may be due to some disorder such as gastric, intestinal indigestion, poor elimination or directly to a cervical subluxation. Playing violently with the young child should not be indulged in. It is a common failing of parents to want the baby to make a good appearance and therefore he is often stimulated to laughter by means that are detrimental to his health. This should not be done. Exercise The need for exercise is quite apparent and this need is as great in the infant as in the adult. Proper exercise is important from the standpoint of hygiene and we will readily realize this when we observe the provisions which have been made in Nature to take care of this very important process. The child gets his exercise from the natural instincts in his nature to run and play. His curiosity performs an important function in this respect. This keeps him running about to investigate the things about him. This takes care of the child that is thrown in a natural environment where there is plenty of room for him to run and play indoors and out, but it does not take care of the infant and the child in the city or apartment who gets the proper amount of exercise only where there is special provision made for it. The infant gets his exercise by kicking, therefore the clothing should not be too tight. If it is, it prevents this natural exercise which is an adaptation on the part of Innate Intelligence. It is advisable to place the nude baby on his back for a few minutes at a time, preferably following the bath. In this way he can kick to his heart’s content. Crying is another means of exercise open to the child. The lusty cry of the infant is an advantage enabling the expansion of the lungs and the exercising of the abdominal muscles, the diaphragm and other structures that would otherwise get very little exercise. Of course attention must be given the crying child to see that there is nothing wrong. The crying may be the result of pain or discomfort from the clothing, but it does not take a mother or nurse long to recognize the different cries.